scotland yard say they have identified 4000 possible hacking victims. an inquiry will start into possible wrongdoing by police officers. we have the latest on that part of the case. >> this famous newspaper titles may have been confined to history, but the scrutiny of its methods goes on. britain's most senior policeman has officers investigating whether other officers were bribed by journalists. >> a small group of officers may have engaged in these practices. i will determine to do what we should do, and that is proceed to criminal courts. >> a former employee told the court last year as a witness that he knew nothing about payments from the police or to the police. e-mails have been provided the raise serious questions. >> someone from news international is misleading us. he has to answer a perjury charge, and that is very serious. >> tonight, it is reported that he will be arrested after setting himself to a police station for questioning. scotland yard says its investigation will be robust, whereas in the past, insiders say it has fallen short. one